Abstract
As a high temperature protective layer, platinum-iridium alloys were electroplated on the nickel-base single crystal superalloy TMS-82+ from amidosulfuric acid solutions by the direct current method. It was found that Ir content in the films was always lower than the ratio of concentration ([Ir 3+]/([PtCl6 2-] + [Ir3+])) in the electrolytes, indicating that preferential deposition of Pt occurred in this study. The asdeposited Pt-Ir films formed an fee single phase structure with a granular surface. When Ir content exceeded 3 at%, Pt-Ir films exhibited the 〈111〉 preferred growth orientation. It was also found that pre-deposition of Ni and Pt promoted the deposition rate and changed composition of overlaying Pt-Ir films.
| Original language | English |
|---|---|
| Pages (from-to) | 2176-2179 |
| Number of pages | 4 |
| Journal | Materials Transactions |
| Volume | 46 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2005 Oct 1 |
| Externally published | Yes |
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Keywords
- Direct current method
- Electroplating
- Ni-base superalloy
- Platinum-iridium films
- Pre-deposition
ASJC Scopus subject areas
- Materials Science(all)
- Metals and Alloys
Cite this
Characterization of electroplated platinum-iridium alloys on the nickel-base single crystal superalloy. / Wu, Yingna; Suzuki, Aya; Murakami, Hideyuki; Kuroda, Seiji.
In: Materials Transactions, Vol. 46, No. 10, 01.10.2005, p. 2176-2179.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characterization of electroplated platinum-iridium alloys on the nickel-base single crystal superalloy
AU - Wu, Yingna
AU - Suzuki, Aya
AU - Murakami, Hideyuki
AU - Kuroda, Seiji
PY - 2005/10/1
Y1 - 2005/10/1
N2 - As a high temperature protective layer, platinum-iridium alloys were electroplated on the nickel-base single crystal superalloy TMS-82+ from amidosulfuric acid solutions by the direct current method. It was found that Ir content in the films was always lower than the ratio of concentration ([Ir 3+]/([PtCl6 2-] + [Ir3+])) in the electrolytes, indicating that preferential deposition of Pt occurred in this study. The asdeposited Pt-Ir films formed an fee single phase structure with a granular surface. When Ir content exceeded 3 at%, Pt-Ir films exhibited the 〈111〉 preferred growth orientation. It was also found that pre-deposition of Ni and Pt promoted the deposition rate and changed composition of overlaying Pt-Ir films.
AB - As a high temperature protective layer, platinum-iridium alloys were electroplated on the nickel-base single crystal superalloy TMS-82+ from amidosulfuric acid solutions by the direct current method. It was found that Ir content in the films was always lower than the ratio of concentration ([Ir 3+]/([PtCl6 2-] + [Ir3+])) in the electrolytes, indicating that preferential deposition of Pt occurred in this study. The asdeposited Pt-Ir films formed an fee single phase structure with a granular surface. When Ir content exceeded 3 at%, Pt-Ir films exhibited the 〈111〉 preferred growth orientation. It was also found that pre-deposition of Ni and Pt promoted the deposition rate and changed composition of overlaying Pt-Ir films.
KW - Direct current method
KW - Electroplating
KW - Ni-base superalloy
KW - Platinum-iridium films
KW - Pre-deposition
UR - http://www.scopus.com/inward/record.url?scp=29044432522&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=29044432522&partnerID=8YFLogxK
U2 - 10.2320/matertrans.46.2176
DO - 10.2320/matertrans.46.2176
M3 - Article
AN - SCOPUS:29044432522
VL - 46
SP - 2176
EP - 2179
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 10
ER -